diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ac65fe..71378aa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,7 +62,7 @@ ENDIF()
 # set(CMAKE_CXX_STANDARD 98)
 
 IF(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98")
+#    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98")
 ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98")
 ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
@@ -72,7 +72,7 @@ ELSE()
 ENDIF()
 
 IF(CMAKE_C_COMPILER_ID STREQUAL "GNU")
-    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
+#    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
 ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "Clang")
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
 ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
diff --git a/gnuradio-runtime/lib/math/qa_fxpt.h b/gnuradio-runtime/lib/math/qa_fxpt.h
index 58a6f02..6020e47 100644
--- a/gnuradio-runtime/lib/math/qa_fxpt.h
+++ b/gnuradio-runtime/lib/math/qa_fxpt.h
@@ -25,6 +25,7 @@
 
 #include <cppunit/extensions/HelperMacros.h>
 #include <cppunit/TestCase.h>
+#include <memory>
 
 class qa_fxpt : public CppUnit::TestCase
 {
diff --git a/gnuradio-runtime/lib/math/qa_fxpt_nco.h b/gnuradio-runtime/lib/math/qa_fxpt_nco.h
index 1b2cdae..1755904 100644
--- a/gnuradio-runtime/lib/math/qa_fxpt_nco.h
+++ b/gnuradio-runtime/lib/math/qa_fxpt_nco.h
@@ -25,6 +25,7 @@
 
 #include <cppunit/extensions/HelperMacros.h>
 #include <cppunit/TestCase.h>
+#include <memory>
 
 class qa_fxpt_nco : public CppUnit::TestCase
 {
diff --git a/gnuradio-runtime/lib/math/qa_fxpt_vco.h b/gnuradio-runtime/lib/math/qa_fxpt_vco.h
index 72693f3..76e0b6d 100644
--- a/gnuradio-runtime/lib/math/qa_fxpt_vco.h
+++ b/gnuradio-runtime/lib/math/qa_fxpt_vco.h
@@ -25,6 +25,7 @@
 
 #include <cppunit/extensions/HelperMacros.h>
 #include <cppunit/TestCase.h>
+#include <memory>
 
 class qa_fxpt_vco : public CppUnit::TestCase
 {
diff --git a/gr-fec/include/gnuradio/fec/polar_decoder_common.h b/gr-fec/include/gnuradio/fec/polar_decoder_common.h
index 13b25ea..8a3d65d 100644
--- a/gr-fec/include/gnuradio/fec/polar_decoder_common.h
+++ b/gr-fec/include/gnuradio/fec/polar_decoder_common.h
@@ -68,7 +68,7 @@ namespace gr {
         bool set_frame_size(unsigned int frame_size){return false;};
 
       private:
-        static BOOST_CONSTEXPR_OR_CONST float D_LLR_FACTOR;
+        static const float D_LLR_FACTOR;
         unsigned int d_frozen_bit_counter;
 
       protected:

